KR100919467B1 - Denim like synthetic facbric - Google Patents

Abstract

PURPOSE: Denim like synthetic fiber fabric is provided to offer luster, tactility and excellent bulky property such as natural fiber fabric, and to implement a white dot tone on the surface of the fiber fabric. CONSTITUTION: A warp is nylon air texturing yarn. A weft is complex air texturing yarn in which core yarn(A) and effect yarns(B) of the polytrimethylene terephthalate multifilament are processed. The effect yarn is made of nylon multifilament and a kind of the multifilament. The multifilament is selected from polyethylene terephthalate multifilament and polytrimethylene terephthalate multifilament. A weight ratio of the nylon multifilament 20~80 weight% based on the whole weight of the effect yarn.

Description

Denim like synthetic facbric

The present invention is woven using synthetic multifilaments as warp and weft yarn, but has a texture and appearance similar to that of woven fabrics using spun yarn of natural fiber, and is dyed in a color more inclined than weft yarn when dyed, and thus has white dots on the fabric surface. The present invention relates to a denim-like synthetic fiber fabric having excellent elasticity in the weft direction while expressing a tone of white dot).

Hereinafter, "denim like fabric" refers to a fabric in which weft yarns have a darker color than a warp so that a tone of white dots appears on the fabric surface.

Since the development of synthetic fibers for the first time, efforts have been made to imitate natural fiber advantages while maintaining the advantages of synthetic fibers. Up to now, synthetic fibers have been developed a lot, and through various processing methods, they are very close to the appearance and touch of natural fibers, and some parts have overwhelmed natural fibers.

Denim is a cotton material, and the slope is indigo dye-dyed dark blue yarn, and weft yarn is used for undyed yarn. twill) or changeable weave. Such cotton denim is gradually dyed or partially desalted by weft yarns by washing or repeated washing to express natural tones and has a soft touch unique to the yarn.

However, most cotton denim has to go through the slope printing process, and the cotton yarn of Sesido is very expensive and the process is complicated in many stages, so most denim fabrics are thick. Therefore, it is difficult to apply to products that require light weight and functionality, such as jackets and sportswear, there is a limit of use.

In order to solve these problems, recently, denim-like fabrics made of synthetic fibers have been developed and widely used in jeans, bags, and simple accessories.

Conventional techniques for producing denim-like fabrics from synthetic fibers include the use of undyed yarns that do not dye and weft yarns in the same way as cotton denim. In this case, there are problems such as disproportionation of salts, cumbersome processes, and high price of the salts process, so they are not frequently used.

As another method, there is a method of printing a denim pattern on a fabric as in Korean Patent Publication No. 1995-110. Part of the denim fabric is engraved on the printing roller or screen to express the denim effect by the printing method, but the process is simple, but the texture is not the same as cotton yarn. There was an inconvenience to change.

As another method, there is a method of producing natural fiber denim fabric by using island-in-the-sea microfiber as in Korean Patent Laid-Open Publication No. 2002-2492 and reducing the weight after weaving to cause the whitening of the fabric block portion by friction. In this method, the island-in-the-sea microfiber is used to show the same feel as natural fiber, but rather, it is close to suede and has to go through weight loss process and friction processing. . In addition, the island has a complex disadvantage, such as the high price of island-in-the-sea microfiber and the need to adjust the appropriate weight loss conditions.

On the other hand, as a conventional technique for imparting a touch and appearance to a synthetic fiber fabric similar to a fabric made of natural fibers, a method of using a spun yarn made of synthetic fibers as warp and / or weft yarn has been widely used.

However, the method is complicated because the yarn is manufactured after the filament-like synthetic fiber yarn is cut into a single fiber state, and then manufactured through a spinning process consisting of mixed cotton, carding, soft rolling, spinning and spinning. There was a problem of ascension.

As another method, Korean Patent Laid-Open Publication No. 10-2005-0036339 discloses (i) a slope of a composite twisted yarn composed of two kinds of polyester multifilaments having different shrinkage characteristics, and (ii) a dyeing characteristic different from the slope. It consists of a weft yarn of air-texturing processing made of thermoplastic multifilaments or thermoplastic multifilaments having different dyeing properties than the warp yarns and thermoplastic multifilaments having the same dyeing properties as the warp yarns. The denim-like synthetic fiber fabric is characterized by having a surface bleeding rate of 50% or more on the tissue, but the denim-like synthetic fiber fabric has a problem that the denim-like effect is excellent but the elasticity of the weft direction is insufficient.

In addition, the denim-like synthetic fiber has a problem in that the inclination of the fabric is inferior to the touch and appearance of the fabric compared to the case of the air-texturing processing yarn because the warp is a composite combustor.

The purpose of the present invention is to express the feel and appearance similar to natural fiber fabrics to solve the above-described problems, and at the same time, the tone of the white spots are generated on the surface of the fabric when dyed like denim, the elasticity of the weft direction in particular An excellent denim-like synthetic fabric is provided.

In the present invention, in order to improve the weft direction stretch of the fabric at the same time as the denim effect, using a polytrimethylene terephthalate multifilament excellent in elasticity as a core yarn (Core Yarn) constituting a composite air-texturing processing yarn weft yarn, The weight ratio of the nylon multifilament in the composite air-texturing processing yarn is characterized in that 20 to 80% by weight relative to the total weight of the effect yarn (Effect Yarn).

The present invention is excellent in the weft direction stretch of the fabric and at the same time exhibits the same gloss, dry feel and good volume as the fabric, when dyeing with acid dyes all of the warp and part of the weft is dyed, the rest of the weft is not dyed White dot on the surface of the fabric (tone) is expressed as a useful material for clothing.

1 is a process schematic diagram of manufacturing a composite air-texturing processing yarn used as weft yarn in the present invention.

* Explanation of symbols on the main parts of the drawings

A: Core Yarn

B: Effect Yarn

1: 1st supply roller 2: 2nd supply roller

3: moisture supply device 4: air entanglement nozzle

5: heating roller 6: drying plate

7: 3rd supply roller 8: winding roller

Denim-like synthetic fiber fabrics of the present invention is inclined nylon air texturing processing yarn, the weft yarn [i] core trim (A) and [ii] (a) nylon multifilament of polytrimethylene terephthalate multifilament and (b) The effect yarn (B) consisting of one kind of multifilament selected from polyethylene terephthalate multifilament and polytrimethylene terephthalate multifilament is an air texuring composite air texuring processing yarn, and the multi-air nylon fabric in the composite air texuring processing yarn The weight ratio of the filament is characterized in that 20 to 80% by weight relative to the total weight of the effect yarn (Effect Yarn).

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The denim-like synthetic fiber fabric of the present invention has a structure in which warp and weft yarns are woven while crossing each other like conventional fabrics.

The warp constituting the fabric of the present invention is a nylon air texturing processing yarn manufactured by treating nylon multifilament by a conventional air texturing method.

Meanwhile, the weft yarn constituting the denim-like synthetic fiber fabric of the present invention is the core yarn (A) is polytrimethylene terephthalate multifilament, and the effect yarn (B) is (i) nylon multifilament and (ii) polyethylene terephthalate multi It is a composite air texturing processing yarn composed of one kind of multifilament selected from filament and polytrimethylene terephthalate multifilament.

The composite air texturing processor may be manufactured by the process as shown in FIG.

1 is a process schematic diagram of manufacturing the composite air texturing processing yarn used as the weft yarn in the present invention.

Referring to Figure 1, looking specifically at the method of manufacturing the composite air-texturing processing yarn, while supplying polytrimethylene terephthalate multifilament to the core yarn (A) to the air entanglement nozzle (4) at the same time nylon multifilament and polyethylene tere A two-ply yarn composed of phthalate multifilament or a two-ply yarn composed of nylon multifilament and polytrimethylene terephthalate multifilament is supplied to the air entanglement nozzle (4) by the effect yarn (B), and the air is entangled, and then the heating roller (5). And heat-treated with a drying hot plate (6) and then wound by a winding roller (8) to produce a composite air-texturing processing yarn.

At this time, the over-feed rate of the core yarn (A) is adjusted to 10 to 20%, the over-feed rate of the effect yarn (B) is adjusted to 20 to 30%, the air pressure during the air entanglement is adjusted to 10 ~ 13kgf / ㎠ And, it is preferable to adjust the temperature of the drying hot plate 6 to 170 ~ 190 ℃, the firing speed to 300m / min to enhance the air-texturing processing effect.

However, in the present invention, the air texturing processing conditions are not particularly limited.

On the other hand, the denim-like synthetic fabric fabric according to the present invention using the nylon air-texturing processing yarn described above as a warp yarn, and the composite air-texturing processing yarn described above as a weft yarn, such as the structure of a three-up (1) up (down) twill weave It is manufactured by weaving.

In the present invention, the structure of the denim-like synthetic fiber fabric is not particularly limited, but in the case of three up one down twill, the surface extruded rate of the inclined surface extruded to the fabric surface is high.

Both the warp yarn (nylon airtexturing yarn) and the weft yarn (composite airtexturing yarn) constituting the denim-like synthetic fiber fabric of the present invention are formed with fine loops and the like on the surface of the yarn, and a large amount of voids in the yarn are made of natural fiber fabrics. Expresses a similar feel and appearance.

As a result, the weight loss process can be omitted to improve the feel and appearance of the synthetic fabric.

The present invention exhibits a feel and appearance similar to that of natural fiber fabrics as described above, and at the same time, due to the inherent properties of synthetic fibers, has excellent chemical resistance and resistance to corrosion, and is easy to handle.

In addition, the denim-like synthetic fiber fabric according to the present invention, the warp yarn is all composed of nylon multifilament, part of the weft yarn is composed of nylon multifilament, the remaining part of the weft is polyethylene terephthalate multifilament or polytrimethylene terephthalate multi Nylon filament is dyed darker when it is dyed with acid dye, but polyethylene terephthalate multifilament or polytrimethylene terephthalate multifilament is not dyed, so white dots appear naturally on the fabric surface.

In addition, the present invention is the core yarn (A) of the composite airtexing processing yarn of the weft yarn is composed of polytrimethylene terephthalate multifilament, and optionally, part of the effect yarn (B) is also composed of polytrimethylene terephthalate multifilament Weft elasticity of the fabric is excellent.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

Example 1

2, in which 75 denier / 36 filament polytrimethylene terephthalate multifilament is used as core yarn (A), and 70 denier / 68 filament nylon multifilament and 75 denier / 36 filament polytrimethylene terephthalate multifilament Using the plywood as the effect (B) yarn, the core yarn (A) is supplied to the air entanglement nozzle (4) at an overfeed rate of 18% as shown in FIG. 1, and the effect yarn (B) has an overfeed rate of 28%. After supplying to the air, these were air-interlocked with an air pressure of 11.5kgf / ㎠, and then heat-treated at 180 ℃ in a drying hot plate (6) to prepare a composite air-texturing processing yarn of three-ply 260 denier.

Next, using the composite air-textured yarn manufactured as described above as a weft yarn, and using a 90-denier / 68-filament nylon air-textured yarn as a warp yarn, the warp gun with a 3 up 1 down twill structure. Weaving fabrics of 9,600 pieces, 70 inches wide and weft density 64 pieces / inch were woven.

Next, the woven fabric was dyed with an acid dye to prepare a fabric.

The results of evaluating various physical properties of the fabricated fabrics were shown in Table 1.

Example 2

A two-ply yarn of 75 denier / 36 filament polytrimethylene terephthalate multifilament 2 ply yarns is used as the core yarn (A), and 70 denier / 68 filament nylon multifilament and 55 denier / 144 filament polyethylene terephthalate multi The core yarn A is supplied to the air entanglement nozzle 4 at an overfeed rate of 20%, and the effect yarn B is 26 using the two-ply yarn in which filaments are plyed together as the effect yarn B as shown in FIG. After supplying with an overfeed rate of%, they were air entangled with an air pressure of 11 kgf / cm 2, and then heat-treated at 180 ° C. in a drying hot plate 6 to prepare a composite air-texturing processing yarn of 4 ply of 318 denier / 264 filaments. .

Next, using a composite air-textured yarn manufactured as described above as a weft yarn, using a 90-denier / 68-filament nylon air-textured yarn as a warp yarn, 9,600 warp heads in a Herrimbon structure, width This 70-inch fabric was woven with a weft density of 80 bones / inch.

Next, the woven fabric was dyed with an acid dye to prepare a fabric.

The results of evaluating various physical properties of the fabricated fabrics were shown in Table 1.

Comparative Example 1

High-strength polyester multifilament yarn (245 denier / 96 filament) of 130% elongation and low-strength polyester multifilament yarn (75 denier / 36 filament) of 35% elongation are air-entangled, flammable and wound Slope composite work with a fineness of 300 denier was prepared.

Next, using polyamide multifilament (75 denier / 48 filament x 2 go) as a super yarn and using a polyamide multifilament (70 denier / 48 filament x 2 go) having the same dyeing properties as the super yarn, as a screening, As shown in FIG. 1, the superfiber yarn is supplied at an overfeed rate of 34% to the air nozzle, and the examination is supplied at an overfeed rate of 16%, respectively.Then, the air is entangled with an air pressure of 10kgf / cm 2, and then 190 at a hollow heater. Heat-treated at 0 ° C., weaving air texturing processing yarn having a fineness of 320 denier was prepared.

Next, the composite fabricated as described above is used as a warp yarn, using an air-texturing processing yarn as a weft yarn, and a 5,500 warp yarn head number is 5,500 pieces in width and 70 inches in width. After weaving a fabric with a weft density of 70 bones / inch, it was dyed and processed by a conventional polyester fabric dyeing (using dispersant) and processing to prepare a fabric.

The results of evaluating various physical properties of the fabricated fabrics were shown in Table 1.

Property evaluation result of processing fabric division Example 1 Example 2 Comparative Example 1 Exterior Great Great usually touch Great Great usually Denim-like effect Great Great usually Weft Elasticity Great Great Bad

In Table 1, various physical properties of the fabric were evaluated by the following method.

Appearance / touch / denim effect / weft stretch

The evaluation was performed by sensory evaluation by 10 experts.

In terms of physical properties, 8 or more out of 10 experts were classified as "excellent", and 5 to 7 were rated as "normal" and 4 or less were rated as "bad".

Claims (3)

The warp yarns are nylon airtexturing yarns, and the weft yarns are [i] core yarns of polytrimethylene terephthalate multifilament (A) and [ii] (a) nylon multifilament and (b) polyethylene terephthalate multifilament and polytrimethylene Effect yarn (B) consisting of one kind of multifilament selected from terephthalate multifilament is a composite airtexuring yarn processed by air texuring, and the weight ratio of nylon multifilament in the composite airtexuring yarn is effect yarn (Effect Yarn) ) Denim-like synthetic fiber fabric, characterized in that 20 to 80% by weight of the total weight. 2. The denim-like synthetic fiber fabric as claimed in claim 1, wherein the tissue of the fabric is three up one down twill. The denim-like synthetic fiber fabric according to claim 1, wherein the core yarn (A) is composed of 1 to 2 polytrimethylene terephthalate multifilaments.